1 files changed, 58 insertions, 0 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/update/ExpressionEventHandler.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/update/ExpressionEventHandler.java
new file mode 100644
index 000000000..898cbe203
--- /dev/null
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/update/ExpressionEventHandler.java
@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright (c) 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.debug.internal.ui.viewers.update;
+
+import org.eclipse.debug.core.DebugEvent;
+import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.model.IExpression;
+import org.eclipse.debug.internal.ui.viewers.IModelDelta;
+import org.eclipse.debug.internal.ui.viewers.IModelDeltaNode;
+import org.eclipse.debug.internal.ui.viewers.IModelProxy;
+
+/**
+ * Event handler for an expression.
+ * 
+ * @since 3.2
+ *
+ */
+public class ExpressionEventHandler extends DebugEventHandler {
+
+    public ExpressionEventHandler(IModelProxy proxy) {
+        super(proxy);
+    }
+
+    protected boolean handlesEvent(DebugEvent event) {
+        return event.getKind() == DebugEvent.CHANGE;
+    }
+
+    protected void handleChange(DebugEvent event) {
+    	ModelDelta delta = new ModelDelta();
+		IModelDeltaNode node = delta.addNode(DebugPlugin.getDefault().getExpressionManager(), IModelDelta.NOCHANGE);
+		IExpression expression = null;
+    	if (event.getSource() instanceof IExpression) {
+    		expression = (IExpression) event.getSource();
+		} else {
+			expression = ((DefaultExpressionModelProxy)getModelProxy()).getExpression();
+		}
+    	if (expression != null) {
+	    	node.addNode(expression, IModelDelta.CHANGED | IModelDelta.CONTENT | IModelDelta.STATE);
+			getModelProxy().fireModelChanged(delta);
+    	}
+    }
+
+    protected void refreshRoot(DebugEvent event) {
+        ModelDelta delta = new ModelDelta();
+        delta.addNode(DebugPlugin.getDefault().getExpressionManager(), IModelDelta.CHANGED | IModelDelta.CONTENT);
+        getModelProxy().fireModelChanged(delta);
+    }
+    
+}